Home / 153,630.21-212,010.57-85,651.50

Finding the Fourth Proportional to 153,630.21, 212,010.57 and 85,651.50

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Solution

The fourth proportional to 153,630.21, 212,010.57 and 85,651.50 is: 118,199.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,630.21 : 212,010.57 = 85,651.50 : x
  2. Step 2: Convert to fraction form
    153,630.21/212,010.57 = 85,651.50/x
  3. Step 3: Cross multiply
    153,630.21x = 212,010.57 × 85,651.50
  4. Step 4: Simplify right side
    153,630.21x = 18,159,023,336.36
  5. Step 5: Solve for x
    x = 18,159,023,336.36/153,630.21
  6. Step 6: Final answer
    x = 118,199.56

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.